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linux/sound
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robelin b4a90b543d
ASoC: dapm: Fix UAF for snd_soc_pcm_runtime object 
When using kernel with the following extra config,

  - CONFIG_KASAN=y
  - CONFIG_KASAN_GENERIC=y
  - CONFIG_KASAN_INLINE=y
  - CONFIG_KASAN_VMALLOC=y
  - CONFIG_FRAME_WARN=4096

kernel detects that snd_pcm_suspend_all() access a freed
'snd_soc_pcm_runtime' object when the system is suspended, which
leads to a use-after-free bug:

[   52.047746] BUG: KASAN: use-after-free in snd_pcm_suspend_all+0x1a8/0x270
[   52.047765] Read of size 1 at addr ffff0000b9434d50 by task systemd-sleep/2330

[   52.047785] Call trace:
[   52.047787]  dump_backtrace+0x0/0x3c0
[   52.047794]  show_stack+0x34/0x50
[   52.047797]  dump_stack_lvl+0x68/0x8c
[   52.047802]  print_address_description.constprop.0+0x74/0x2c0
[   52.047809]  kasan_report+0x210/0x230
[   52.047815]  __asan_report_load1_noabort+0x3c/0x50
[   52.047820]  snd_pcm_suspend_all+0x1a8/0x270
[   52.047824]  snd_soc_suspend+0x19c/0x4e0

The snd_pcm_sync_stop() has a NULL check on 'substream->runtime' before
making any access. So we need to always set 'substream->runtime' to NULL
everytime we kfree() it.

Fixes: a72706ed82 ("ASoC: codec2codec: remove ephemeral variables")
Signed-off-by: robelin <robelin@nvidia.com>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Link: https://patch.msgid.link/20240823144342.4123814-2-spujar@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-08-23 23:07:55 +01:00
..
ac97 driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00
aoa ALSA: aoa: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:08 +02:00
arm ASoC: Updates for v6.10 2024-05-13 11:39:49 +02:00
atmel ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
core sound fixes for 6.11-rc1 2024-07-26 11:01:31 -07:00
drivers parport: Remove parport_driver.devmodel 2024-07-03 16:44:22 +02:00
firewire ALSA: firewire-lib: fix wrong value as length of header for CIP_NO_HEADER case 2024-07-27 10:28:36 +09:00
hda Driver core changes for 6.11-rc1 2024-07-25 10:42:22 -07:00
i2c ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
isa ALSA: sb: Drop NULL check for snd_ctl_remove() 2024-06-18 12:51:50 +02:00
mips ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
oss sound/oss/dmasound: add missing MODULE_DESCRIPTION() macro 2024-06-18 11:55:53 +02:00
parisc ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
pci sound fixes for 6.11-rc1 2024-07-26 11:01:31 -07:00
pcmcia ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
ppc ALSA: ppc: keywest: Drop explicit initialization of struct i2c_device_id::driver_data to 0 2024-07-09 09:16:30 +02:00
sh ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
soc ASoC: dapm: Fix UAF for snd_soc_pcm_runtime object 2024-08-23 23:07:55 +01:00
sparc ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
spi ALSA: spi: Drop NULL check for snd_ctl_remove() 2024-06-18 12:54:34 +02:00
synth ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
usb ALSA: usb-audio: Add a quirk for Sonix HD USB Camera 2024-07-22 14:45:14 +02:00
virtio virtio: rename virtio_find_vqs_info() to virtio_find_vqs() 2024-07-17 05:20:58 -04:00
x86 Merge drm/drm-next into drm-intel-next 2024-06-19 11:38:31 +03:00
xen ALSA: xen-front: remove unused struct 'alsa_sndif_hw_param' 2024-06-13 14:14:46 +02:00
ac97_bus.c ALSA: ac97: legacy: Add missing module description 2024-05-09 10:13:07 +02:00
Kconfig
last.c
Makefile ALSA: core: Use *-y instead of *-objs in Makefile 2024-05-08 18:17:32 +02:00
sound_core.c